[PATCH cygport] lib/src_postinst.cygpart: parallelize __prepstrip

[Jon Turney]

On 30/03/2023 21:34, Jon Turney via Cygwin-apps wrote:
> On 30/03/2023 20:49, Achim Gratz via Cygwin-apps wrote:
>> Jon Turney via Cygwin-apps writes:
>>> On 26/03/2023 19:12, Jon Turney via Cygwin-apps wrote:

> Exchange the while loop using an iffy read construct to a for loop using a temporary file.

I think this change from zero-delimited to whitespace means this will 
now fail to handle any filenames containing whitespace correctly?

This commentary doesn't clearly identify what is wrong with the usage of 
read here.

> avoid filename collisions by using an
>     SHA256 hash of the full file name. 

I think there is already a perfectly good, filesystem safe, 
computationally cheap unique identifier for each filename, which is it's 
ordinal number in the list of filenames we are examining.

'wait -f' seems to be new in bash 5.0.  I assume this fails horribly on 
earlier bash versions.  I'm ok with requiring that, but maybe we should 
check the bash version?

On the plus side, the testsuite passes! :)